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A. L. GILSTRAP.

STEAM GENERATOR.

No. 365,000. Patented June 14, 1887.

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(No Model.) 2 Sheets-Sheet 2. I A. L. GILSTRAP.

STEAM GENERATOR. I

PatentedJune l14, 1887.

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UNITED STATES PATENT OFFICE.

ABNER L. GILSTRAP, OF SPRINGFIELD, .MISSOURB STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 365,000, dated June 14,1887.

Application tiled August 1Q, 1886.

l'o LZZ whom, it may concern.-

Be it known that l, ABNEE L. GrLsrRxr, a citizen of the UnitedStates,residing at Springfield, in the county of Greene and State ofMissouri, have invented certain new and useful Improvements inSteamGenerators; and l do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and usethesame.

My invention relates to steamgenerators; and it consists in theconstruction, novel arrangement, and adaptation of devices, as will behereinafter set forth and claimed.

In the accompanying drawings, Figure 1 is a vertical longitudinalsection of a generator embodying my improvements. Fig. 2 is across-section upon the line x :v of Fig. 1.

Referring Aby letter to the drawings, A indicates the outer walls of thegenerator, secured to the base-plate B, by means of bolts or rivets I),extending through the lower edge or rim of the outer walls, A, andbase-plateB. The said walls A all around extend upward to a point at ornear a horizontal line with the top of the re-box, the elevationot'which rebox may be any height desired, and from which horizontal linethe walls A are curved or rounded inward and upward toa line aboutvertical with the outside of the fire-box, and from thence directlyupward to any desired extent, and are provided with a suitable cap, a?,concave on the under side.

C is an outer covering, extending around the walls Aof the generator andsecured to the base-plate B in a similar manner, and forming between thewalls A a flue or space, c, around the walls A, extending upward andconnecting with the smoke-stack, being identical with the smoke-stack D,at the point C, at or nearly on ahorizontal line with the point a of thegenerator-walls A.

D is a smoke-stack, made of any desired size and shape.

E isa ire-box, placed inside and about the center of the walls A, andits sides e are secured to the base-plate B, by means of a rim rivetedor bolted thereto, preferably. extending around the interior of the iirebox, forming a shoulder on the base-plate, around the inside of thefire-box, and opening through the baseplate to receive a grate, F, therim f Serial No. 210,650. (No model.)

of which rests on said shoulder at the lower end of the iirebox. Thebase-plate B is preferably square, but may be made in any desired formand thickness, with a hole through it about the center and under thefire-box E and grate F, to permit the ashes and cinders to drop throughfrom the tire-box and to admit a draft of air. To the upper end of thelire-box is secured a cap, e, bolted or riveted on. This cap is concaveon the under side. To the sides c4 on the outside are secured suchnumber of rods or bars G as may be desired, connecting with the insidelof the upper part ofthe walls A, for the purpose of strengthening thegenerator.

H is a boiler-flue composed of two walls, extending around theiire-box,midway,or nearly so,bet\veen it and the walls A, and the walls h h aresecured at their base to the base-plate B, by most convenient turn ofrims bolted or riveted thereto, in like manner as the walls A. To thetop of this boiler-flue H is iixed a cap, h2, concave on the under sideco-extensive with its walls and riveted or bolted thereto. Thisboiler-flue may extend up to or near the top ofthe body ofthe tire-box,as may be desired, and is connected at or near the top by any desirednumber of tubular flues, l, with the fire-box at or near its top, bywhich the fire-name and heated air pass from the tire-box in theboiler-line; and again, the boiler-flue has a connection, by anysuitable number of tubular ilues, J, from its bottom into the ilue ci,at or near its bottom, by which the ilame and hot air pass from theboiler-flue into the iiue c, and from thence around the walls A, and outofthe smoke-stack D.

To clean out the lues and the water-spaces between' them, openings aremade down through the base-plate, which openings are indicated at c3,it, at, and a5, each ot' which is supplied with the usualcovering-plates, through which the ashes, cinders, and soot, and alsothe sediment and water, may be driven out of the generator.

At the top of the boiler-flue H, on one or more sides, if desired, areprovided openings into said tlue for the water and steam in thegenerator, for admitting and shutting ofi1 water and steam when requiredto clean out the flue o2 and other flueconnections, of ashes, cinders,soot, and sediment, These openings ICG I are supplied with the usualstop-cocks, k2, the

turningbar of which is passed through atube inserted in the flue c2 andthe walls A, terminating in a handle outside of the iiue c2.

At and below the water-line in the generator twoA ordinary steam-gages,L and L', for showing the presence of water and steam, are insertcdintoandthrough thefluecaudwallsA.

Steam connecting-pipes M M are shown in Fig. l secured on the inside ofthe walls A A, and are used to conduct the steam from the generator tothe engines, supposed to be secured to the base-plate outside of theflue c2.

N is a reception-pipe, having a stop-cock, n, in it, inserted into andthrough iue c2 and walls A, ou a level with the upper steam-gage, asshown' in drawing No. 1, and is used for the purpose of filliugthegenerator withwater. Over the baseplate and secured thereto, enteringthe flue c from the force-pump or insulator, and passing inside of thatfluevhalfway around the Walls A', is placed the supplypipe Q, made inthe usual manner,.and used to supply the generatorwith water when inuse.

O is an opening or door, through which to ator proper and forming thesmoke-Hue c2,

leading to the uptake or stack, ilue H, leading from the furnace downthrough the watervspace and into the flue c2, one or more outlets,

M, leading from the steam-dome down th rough .the water-space and outthrough the boiler? shell and its casing,waterfeeders Q, the braces G,and plates K, for affording access to the lower ends of the water-spaceand smoke-dues, all constructed andadapted to operate substantially inthe manner and for the purposes described.

In testimony whereof I aii x my signature in S. A. HAsELTINE, S. C.HASELTINE.

